Ash discharging device



Jan. 3, 1933. E. HAHN 1,392,946

ASH DISCHARGING DEVICE Original Filed Nov. 30. 1926 2 Sheets-Sheet 1ElzgenefiQ/zn. 5g fizb fiorneyq @mhhm w Jan. 3, 1933. Ev HAHN ASHDISCHARGING DEVICE Original Filed Nov. 30, 1926 2 Sheets-Sheet.

Patented Jan. 3, 1933 NETED ATES EUGENE HAHN, OF PHILADELPHIA,PENNSYLVANIA ASH DISGHARGING DEVICE Application filed November 30, 1926,Serial No. 151,743.

This invention relates to improvements in ash hoppers, and moreparticularly in that type of hopper adapted to receive ashes directlyfrom the grates of the boilers or furnaces and to deliver themperiodically either to vehicles drawn beneath the hoppers or toconveyers by which. the ashes are conducted to suitable points ofdischarge.

The principal object of the invention is to provide a novel form ofhopper affording certain material advantages, hereinafter enumerated,over hoppers of this type as constructed prior to my invention.

A more specific object of the invention is to provide novel andadvantageous means for collecting and carrying ofi the water used forquenching the ashes.

Another object of the invention is to provide novel means for providingthe inner surface of the hopper with heat and acid resisting lining.

A still further object of the invention is to provide novel means foragitating the ashes within the hopper to insure a free flow to theoutlet.

The invention further contemplates novel means for coordinating the dumpplates controlling the passage of ashes into the hopper and the valvescontrolling the flow of water from the quenching apparatus.

In the attached drawings:

Figure 1 is a plan view of the hopper made in accordance with myinvention;

Fig. 2 is a side elevation of the hopper;

Fig. 3 is a fragmentary front elevation showing the details of thedischarge port;

Fig. 4 is a section on the line 4- i-, Fig. 3, and

Fig. 5 is a fragmentary sectional view illustrating the details of themechanism coordinating the ash dump plate and the quenching means.

Referring to the drawings, the hopper as shown in the present instanceis of semioctagonal form. The hopper may be built of a plurality ofplates secured together at the edges in accordance with the principleset forth in my copending application, Serial Number 13,876. In thisform of invention, I have disclosed a tank or a hopper made up ofRenewed May 25, 1932.

a plurality of plates adapted to be united at their edges either bymeans of integral flanges or by overlapping members, as shown.

In the present instance, the bottom of the tank, as clearly illustratedin Fig. 2, is formed at an inclination to the horizontal ofapproximately 15, and the discharge port of the hopper is placed at thebottom of this in clined wall, as clearly illustrated.

In Fig. 4, the discharge opening is desig nated by the reference numeral10, and from this opening extends an inclined chute 11. This chute,which in the present instance, is rectangular in form, is adapted tocarry at its lower end a suitable gate structure controlling the flow ofashes from the hopper, but since this gate structure may take a varietyof forms and constitutes no part of the present invention, it has notbeen illustrated. In the bottom of the chute 11 is a transverse opening12 which as shown in Fig. 3 extends completely across the width of thechute, and extending downwardly from this opening 12 is a funnel-likestructure 13 terminating at its bottom in a restricted opening 5 14which connects in the present instance with a pipe 15 extending to asuitable drain. Supported in the opening 12 and constituting a part ofthe floor or bottom wall of the chute 11 is a slotted grate member 16,the slots 17 of this member extending substantially the entire length ofthe member and accordingly transversely completely across the chute. Theslots 17 are so proportioned as to prevent passage therethrough of anyso substantial sizes of ashes or other material passing through thechute 11, but offer a ready passage for water and fine ash dust, ashereinafter more fully set forth. The slots preferably are flared orwidened toward the 9 bottom.

At the top of the hopper and extending is a water pipe 18,

completely therearound from which short branches with nozzles 19 projectinto the interior of the hopper through suitable openings 20 providedfor their reception. The pipe 18 is connected to a line 21 with asuitable source of water supply, and a valve 22 controls the flow ofwater from the source to thesaid pipe 21. It

will'be apparent that when the valve 22 is open, water will be projectedthrough the nozzles 19 into the top of the hopper from all sides, theprojection preferably being in the form of a spray which will permeateand quench the hot ashes and cinders entering the hopper. This waterafter passing downwardly through the ashes eventually flows into thechute 11 and through the slots 17 in the grate member 16, thereafterpassing oil to a suitable drain through the pipe 15.

As previouslyset forth, this hopper is adapted to receive ashes directlyfrom the grates of boilers or furnaces, and for this purpose it iscustomary to mount the hopper directly belowthe ash pit of the furnaceso that the ashes may drop from the ash pit directly into thehopper.Such an arrangement I have illustrated more or less diagrammatically inFig. 5. In this instance, I have illustrated at 23 the lower end of anautomatic stoker' which feeds intoan opening 24 controlled'by a dumpplate 25. This plate when elevated, as illustrated in full lines,effectually closes'the opening 24, but when dropped to a position asshown in broken lines permits ashes to fallinto the hopper which, asshown, is positioned directly below said opening. The plate 25 iscontrolled in the present instance through lever and link mechanism 26by a manually operated bar 27, and this bar also connects through aconnecting rod 28 and a lever 29 with'the valve 22. WVith the lever 29in the position shown in full lines,the valve 22 is closed, and it willbe noted that in this position the plate 25 is also' closed. lVhenthebar 27 is retracted so as to open theplate 25, the lever 29 is movedto aposition illustrated in broken lines, which results in the opening ofthe valve 22, permitting water to flow to the nozzles 19. Simultaneouslywith the movementof ashes intothe hopper therefore, wa-

ter is projecting through the nozzlesinto the tank andinto the path ofthe ashes so that quenched. This prevents the deleterious ef- Thecombination with a furnace, of a hop per adapted to receive ashes directfrom under said. furnace, adjustable means for controlling the passageof the ashes to the hopper, apparatus associated with the hopper forprojecting water to quench the ashes as they enter the hopper, a valvecontrolling said quenching apparatus, and common actuating means for thesaid adjustable controlling means and the valve whereby they are openedand closed simultaneously through operation of a single element;

EUGENE HAHN.

the latter are thoroughly flushed and fects of excessive heat upon theside walls of the tank.

In order to provide means for loosening up the ashes in the hopper toprevent undue compacting and toinsure a proper flow of ashes towards thedischarge opening under all conditions, I provide within the tank andextending transversely thereof a shaft 30. This shaft is journaled inthe side walls of the tank and carries at intervals projecting fingersor teeth 31 which, when the shaft is revolved, cause an agitation in thebody of ashes within the tank. The extremities of the shaft "30 exteriorofthe tank are provided with ratchet wheels 32, 32, and s looselysuspended from each end of the shaft is an actuating lever 33 whichcarries in each

